Improvement in coal-osl hand-lasers



' 4Similar letters parts.

4u a; Vandopenings b mayalsobe made in the UNITED STATES `EDY'V'IN ROBERTS, OF MOORESTOVN, NEW

PATENT JERSEY, ASSIGNOR Ti) Hiltll AND HENRY (JOY.

iMPaovl-:MENT .ne coat-ou. timonel-taies,

Specification forming part of Letters'I-atent No. 49,9%@

Figure l isla vertical section of a lamp and my iniproven'ient, .which is attached .to it1 :o a2, Fig. 2, indicating the line of section; Fig. 2, a plan or top view of. the same; Fig. 3, adetaclied side View of :ny-invention.

- of reference indicate like This invention relates toa -new and improved jacket to be applied `to the cylindrical wicktube of'a coal-oil hand-lamp without'a chimney, for the pur-posent' producing av sutlicient light without smoke and. better protecting it from being extinguished by suddenlyiifting the lamp orirapidly carrying it about 'throughV a dwelling.

.It consists in constructing the said jacket out ot' a short lcylindrical tube of thin sheet `metal by longitudinally crimping its upper half, so that when the jacket is applied over. the usual long cylindrical Wick-tube of a coaloil handflamp it will a 'ord alongthe upper half of the said wicktnbe two small distinct air-fines parallel with each other, the wick-tube being between, the lower halt' of the said jacket being left cylindrical, its bottoni edges scalloped out for the 'free vadmission of air to the two nues above, andthe upperend of each iiue formed to have a broadv projecting plate inclined partly over the wick-tube, so that it will serve todenect the rising currents of heated air of the'iues against the 11eme. p

A represents a lamp, which may be constructed in any of the known' forms, and B the .wick-tube, which must beoi' cylindrical form, such as are used for burningiluid.

C is a jacket, constructedotsheet metal, and of tiaringform at its lower part,.the lower end being scalloped out soas to form air-spaces oxygeinthe llame bein `ali-,any height o n the 'said fines, and, inipinging lower part ot the llame,

dated September len.

lowerpartI of the jacket to admit ofthe en The upper part ofthejaclret *U trance ofvair. is swage'd so as to form three compartments, c c c, which extend upward side by side, the central one, c', being designed to receive the tube B, while the others, c o, conduct t to the flame, as shown clearly in Fig. l. At the top oi' the jacket C `there are two plates, D D, one at the outer edge ot' each coinvpertinent: or air-passage c, and these plates are curved inward toward each other, as shown; 1n Fig. l, said plates being broader than thek top ot the jacket, as shown in Fig. 3. Neen the jacket -is .placed on the wick-tube the imper end of the latter willbe about on a lever with the upper end ot' the compartment cf. Thejacliet, however, may be raised orlow, .d in order te vary the hei passages c c condifrct ie bedesired. 4The ai'rf air to the flame, while thedefleetors D cause I the air to impinge against the'tlame, so that.

e abundantly supplied with g spread out or tiattened deeetors, so as to pre the latter will b between the plates or sent abroad area above the detlectors.

r)Che jacket :nay be swaged in prop, torni out ot' sheet metal ata tritiingccost, and it may be applied to any cylindrical wick-tubeu .et

perfect illmninatingdiame is produced it.x

and itwill admit of coal-oil being used in hand lamps without the emission ot' smoke or any unpleasant odor. The central compartment, c', ts closely around the wielrtube B, so that the jacket 'can be supported simply by friction wich-tube which the sired weakness ot' the light may render expe dient in using it as a night-lightg-but iu any case the wiel; is not intended t enough to produce sciolte.

In the operation of the jacket, its lower hait beingl eapacious and also open tothe air at its bottom, andthe flues'e c being comparatively of small diameters, the air, becoming heated, rushes up withjnereasing velocity through the d by them upon 'the so as to perfect the combustion of the oil, while in littin g the lamp suddenly the said plates deliect the air abcve them outward, vso as to prevent its'erztinguish ing-plates D D, is directe he air' glit of the darne, asniay' oprojeet against the delicat-l in g the flame, and serve also to protect; it iu jacket and tube being arranged to operate toearrying the lamp about. gether as described,l for the purposes specified.

Having thus described lily invention I claim as newand desire toseeurebyLetterslPatent- EDWIN ROEERTS,

The jacket C, constructed as described. and Witnesses:

set forth, in combination with the .iylindrieal G. F. DOUGHTEN,

wick-tube B of a coal-oil hand-lamp, the said T. H. MAXELL. 

